If I visit an historic market town, I'd expect to see cobbles and such.
If I lived there, I'd be aware of them and act accordingly.
A stupid causeway with no apparent reason to me is another matter.
My mum tripped and fell on cobbles at Holmfirth a few years ago. (Last of the summer wine location).
She knew there were cobbles there, can't blame the local council really could she.
Just for the record, Cllr Blank never did get back to me
Hope your mum's Ok Andy